DaLoCo Posted June 8, 2011 Share A dry weld. It is dry, but you can drink it.I would first look at ALL the other options before buying that Savannah Perhaps the LBS dude was having a few too many Savannah's.... Link to comment Share on other sites More sharing options...
Caerus Posted June 8, 2011 Share http://www.welding-technology-machines.info/under-water-welding-processes/dry-welding.htm Link to comment Share on other sites More sharing options...
Big H* Posted June 8, 2011 Share What bike is it? I had something like this on one of my full suss frames. I could never find the source of the creaking. Also sounded like a crack (whatever that sounds like?) Did everything from remove the BB, change seatpost, bearings etc. Eventually we found the issue. It was the rear deraileur's cable. The cable had an aluminium end cap that would rub and creak where it met the frame. So simple. Greased it and never heard the sound again. Check things like that. A dry weld sounds like LBS to me You can download sounds made by a crack here - http://www.fart-sounds.net/ Edited June 8, 2011 by eccentric1 Link to comment Share on other sites More sharing options...
Palaeodom Posted June 8, 2011 Share Thanks for all the advise, It a mongoose Meteore Team, and barely 6 months old. I've checks pretty much everything and i can make it creak just by putting weight on one of the pedals while the bike is tanding still and pushing across the frame, it is a clear creaking sounds as it flexes and then lfexes back when i relieve the pressure. What I would really like to know is do I have to wait for it to visibly crack before I take it back to the shop or do I ride it until it does crack...Its a seriously annoying noise thats for sure as its almost constant when i'm riding, whether fast, slow in or out the saddle. Link to comment Share on other sites More sharing options...
Caerus Posted June 8, 2011 Share Thanks for all the advise, It a mongoose Meteore Team, and barely 6 months old. I've checks pretty much everything and i can make it creak just by putting weight on one of the pedals while the bike is tanding still and pushing across the frame, it is a clear creaking sounds as it flexes and then lfexes back when i relieve the pressure. What I would really like to know is do I have to wait for it to visibly crack before I take it back to the shop or do I ride it until it does crack...Its a seriously annoying noise thats for sure as its almost constant when i'm riding, whether fast, slow in or out the saddle. Did you try going to Mongoose directly? See what their stance on the matter is Link to comment Share on other sites More sharing options...
Palaeodom Posted June 8, 2011 Share Did you try going to Mongoose directly? See what their stance on the matter is No, do you know who the mongoose rep is in SA? or do you reckon just go through the main website? Link to comment Share on other sites More sharing options...
Big H* Posted June 8, 2011 Share Thanks for all the advise, It a mongoose Meteore Team, and barely 6 months old. I've checks pretty much everything and i can make it creak just by putting weight on one of the pedals while the bike is tanding still and pushing across the frame, it is a clear creaking sounds as it flexes and then lfexes back when i relieve the pressure. What I would really like to know is do I have to wait for it to visibly crack before I take it back to the shop or do I ride it until it does crack...Its a seriously annoying noise thats for sure as its almost constant when i'm riding, whether fast, slow in or out the saddle. Creaks on a bicycle can have a multitude of causes. The frame transmits the noise and it may enamate away from where the problem is. Saddle rails, dry BB, water bottle screws, pedals and cleats etc and many others can cause this. It not only drives you crazy but also those that cycle with you. Best way is to start with the obvious in a proces of elimination. http://www.jimlangley.net/wrench/keepitquiet.html I would not cycle with a frame that has a possible crack. If the LBS does not give you joy contact the agents. They ar Ominco (www.omnico.co.za) Link to comment Share on other sites More sharing options...
kosmonooit Posted June 8, 2011 Share In electronics you get a 'dry joint' which is a vrot soldering connection: the solder crystallises and is a bad conductor, normally happens with the solder is disturbed when cooling. Perhaps this is where they get the idea from, but with metal welding surely its a "Go-No Go" and if there is creaking it means one of the mechanical movement reasons suggested above, but a weld creaking? 'sounds' like bollox to me. Edited June 8, 2011 by kosmonooit Link to comment Share on other sites More sharing options...
LeTurbo Posted June 8, 2011 Share i can make it creak just by putting weight on one of the pedals while the bike is tanding still and pushing across the frame, it is a clear creaking sounds as it flexes and then lfexes back when i relieve the pressure. its almost constant when i'm riding, whether fast, slow in or out the saddle. Have you checked the actual pedals as well as the cranks? Also, at your QRs (give the dropouts a light wipe of grease). But if it's making a noise when you're stationery, get a piece of tubing (old hosepipe works well) about a foot long and get someone to do this push-pull exercise you describe above. Use the housepipe like a stethoscope and you'll find you can isolate the point where the noise is coming from quite accurately. Link to comment Share on other sites More sharing options...
Palaeodom Posted June 8, 2011 Share Have you checked the actual pedals as well as the cranks? Also, at your QRs (give the dropouts a light wipe of grease). But if it's making a noise when you're stationery, get a piece of tubing (old hosepipe works well) about a foot long and get someone to do this push-pull exercise you describe above. Use the housepipe like a stethoscope and you'll find you can isolate the point where the noise is coming from quite accurately. Good idea, i shall try that...unless anyone knows of a particularly attractive female nurse/doc who does home visits and actually has a stethoscope. Link to comment Share on other sites More sharing options...
Palaeodom Posted June 8, 2011 Share In electronics you get a 'dry joint' which is a vrot soldering connection: the solder crystallises and is a bad conductor, normally happens with the solder is disturbed when cooling. Perhaps this is where they get the idea from, but with metal welding surely its a "Go-No Go" and if there is creaking it means one of the mechanical movement reasons suggested above, but a weld creaking? 'sounds' like bollox to me. The LBS seem to think that one of the welds hasn't bound the metals correctly and that one of the edges inside the bound tube is creaking against the other...at some point they mentioned rust but who knows...not sure i'm going to fork out R600 to check to welds...my next step is to strip it and see if i can make the frame do it then put it back together checking everything...who knows. Link to comment Share on other sites More sharing options...
Pusher Posted June 8, 2011 Share You could use something like a stethoscope to help locate the noise.Put it against the head tube and get someone to climb on and off the bike. If it is coming from the head tube you will defiantly hear it through the scope. I've used a screwdriver before to locate a noise in an engine. Put the tip against the tube and your ear againt the handle. You will be surprised at what noises you can pick up. Link to comment Share on other sites More sharing options...
Grebel Posted June 8, 2011 Share You can check for hirline cracks not normally vissible by eye with Dyepen. It is a two part system with dye and a developer. That will show up any cracks, but you can kiss your paintjob goodbye! Dry welding is a technique as opposed to a description. As pointed out by kosmonooit earlier it sounds like a bike shop mech trying to sound clever and talking through his crack... It could very well be a crack but perhaps a very small one not visible to the naked eye. Sounds more like something rubbing somewhere. Try and isolate where it is coming from and empty a tin of WD40 in thatarea to see if it goes away. (Not on the brakes though!!) Link to comment Share on other sites More sharing options...
Harry Potter Posted June 8, 2011 Share My newish frame has started making quite a bit of noise during general riding, I've had all the usual suspects checked out at the LBS and they have now suggested that at the head tube or the BB tube there must be a dry weld thats creaking everytime the frame flexes. Thanks allSo they should send it back and get a new one, If my bike is 6 months old and has some cracking noise, and they spin me the same story, Wy should I look for pedal noise etc. etc. The bike has a warenty so???? Don't let them "dry hump" you Link to comment Share on other sites More sharing options...
Palaeodom Posted June 8, 2011 Share So they should send it back and get a new one, If my bike is 6 months old and has some cracking noise, and they spin me the same story, Wy should I look for pedal noise etc. etc. The bike has a warenty so???? Don't let them "dry hump" you I brought the frame seperately so its bound to be something else. I'm going to take it back to the shop where i brought the frame tomorrow and then we'll see...you're right if it is the frame then they need to fix it it sounds like i'm riding an old man. Link to comment Share on other sites More sharing options...
Harry Potter Posted June 8, 2011 Share I brought the frame seperately so its bound to be something else. I'm going to take it back to the shop where i brought the frame tomorrow and then we'll see...you're right if it is the frame then they need to fix it it sounds like i'm riding an old man. is it a grumpy one? Link to comment Share on other sites More sharing options...
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